用于CW Ti：Sapphire laser调谐和长期稳频的简单数字系统
A simple digital system for tuning and long-term frequency stabilisation of a CW Ti:Sapphire laser
摘要：
我们已经实现了一个简单的和具有成本效益的数字系统的长期频率稳定和锁定到任意波长的单频环形连续钛宝石激光器。该系统围绕两个共焦法布里-珀罗腔构建，其中一个用于窄化激光器的短期线宽，另一个用于提高激光频率的长期稳定性。第二个干涉仪也在稳定到原子跃迁的外腔二极管激光器的辐射路径上。我们的系统是商业Tekhnoscan激光锁的扩展。该系统已成功地用于超冷里德伯原子的高分辨激光光谱实验。
英文摘要：
We have implemented a simple and cost-effective digital system for long-term frequency stabilisation and locking to an arbitrary wavelength of the single-frequency ring CW Ti:Sapphire laser. This system is built around two confocal Fabry-Perot cavities, one of which is used to narrow short-term line width of the laser and the other to improve long-term stability of the laser frequency. The second interferometer is also in the path of the radiation from an external-cavity diode laser stabilized to an atomic transition. Our system is an extension of a commercial Tekhnoscan laser lock. This system has been successfully used in experiments on high-resolution laser spectroscopy of ultracold Rydberg atoms.
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